CWE WEAKNESSES / CWE-192
CWE-192
Integer Coercion Error
Variant EXPLOIT LIKELIHOOD: MEDIUM
What it is
Integer coercion refers to a set of flaws pertaining to the type casting, extension, or truncation of primitive data types.
Several flaws fall under the category of integer coercion errors. For the most part, these errors in and of themselves result only in availability and data integrity issues. However, in some circumstances, they may result in other, more complicated security related flaws, such as buffer overflow conditions.
Impact
| Availability | DoS: Resource Consumption (CPU), DoS: Resource Consumption (Memory), DoS: Crash, Exit, or Restart |
| Integrity, Confidentiality, Availability | Execute Unauthorized Code or Commands |
| Integrity, Other | Other |
Mitigations
- [Requirements] A language which throws exceptions on ambiguous data casts might be chosen.
- [Architecture and Design] Design objects and program flow such that multiple or complex casts are unnecessary
- [Implementation] Ensure that any data type casting that you must used is entirely understood in order to reduce the plausibility of error in use.
Real-world CVE examples
- CVE-2022-2639 — Chain: integer coercion error (CWE-192) prevents a return value from indicating an error, leading to out-of-bounds write (CWE-787)
Related weaknesses
Test & detect
Browse all common weaknesses, check related exploited CVEs, or map to ATT&CK techniques.
Source: MITRE CWE. View on cwe.mitre.org →